/* ============ 设计系统 ============ */
:root{
  --cream:#F4FAF7;
  --paper:#FFFFFF;
  --ink:#1E2E29;
  --ink-soft:#4C5E57;
  --muted:#93A39B;
  --brand:#2FA372;
  --brand-deep:#1E7E55;
  --brand-soft:#E3F2EC;
  --sky:#4FAFD1;
  --sky-deep:#2E86AB;
  --sky-soft:#E6F3F9;
  --mint:#F2FAF6;
  --ice:#F0F8FC;
  --grad:linear-gradient(120deg,#6FBBDD 0%,#2FA372 52%,#1E7E55 100%);
  --grad-soft:linear-gradient(120deg,rgba(79,175,209,.18),rgba(47,163,114,.18));
  --line:rgba(30,46,41,.08);
  --shadow-sm:0 6px 22px rgba(46,125,91,.05);
  --shadow:0 20px 54px rgba(46,125,91,.08);
  --shadow-lg:0 34px 88px rgba(46,125,91,.12);
  --radius:26px;
  --radius-sm:16px;
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--cream);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:"Inter","Noto Sans SC",sans-serif;font-weight:600;line-height:1.18;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{
  display:inline-block;font-size:.8rem;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--brand);margin-bottom:14px;
}
.eyebrow--center{display:block;text-align:center}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:14px;font-weight:500;font-size:.97rem;
  cursor:pointer;border:1.5px solid transparent;transition:.35s var(--ease);
  font-family:inherit;
}
.btn--primary{background:#24c789;color:#fff;box-shadow:0 10px 26px rgba(36,199,137,.30)}
.btn--primary:hover{background:#1FB579;transform:translateY(-2px);box-shadow:0 16px 34px rgba(36,199,137,.38)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn--light{background:#fff;color:var(--brand-deep)}
.btn--light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,255,255,.25)}
.btn--block{width:100%;justify-content:center;margin-top:6px}

/* ============ 顶部条 ============ */
.topbar{background:var(--ink);color:#EDEFE9;font-size:.82rem}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar__link{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-weight:500}
.topbar__link svg{transition:.3s}
.topbar__link:hover svg{transform:translateX(3px)}

/* ============ 导航 ============ */
.nav{position:sticky;top:0;z-index:50;transition:.4s var(--ease)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.nav.scrolled{background:rgba(239,245,241,.80);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.brand{display:flex;align-items:center;gap:11px}
.brand__mark{color:var(--brand);display:flex}
.brand__name{font-family:"Inter","Noto Sans SC",sans-serif;font-weight:700;font-size:1.32rem;display:flex;flex-direction:column;line-height:1;color:var(--ink);letter-spacing:-.01em}
.brand__name small{font-family:"Noto Sans SC",sans-serif;font-weight:400;font-size:.58rem;letter-spacing:.28em;color:var(--muted);margin-top:3px}
.brand__name--light{color:#fff}
.brand__name--light small{color:rgba(255,255,255,.6)}

.nav__menu{display:flex;align-items:center;gap:30px}
.nav__menu a{font-size:.95rem;color:var(--ink-soft);position:relative;padding:6px 0;transition:.3s}
.nav__menu a:not(.nav__cta)::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:.3s var(--ease)}
.nav__menu a:not(.nav__cta):hover{color:var(--ink)}
.nav__menu a:not(.nav__cta):hover::after{width:100%}
a.nav__cta, .nav__menu a.nav__cta{
  display:inline-flex;align-items:center;line-height:1;
  background:var(--brand);color:#fff!important;padding:11px 24px;border-radius:14px;font-weight:500;transition:.3s;
}
.nav__menu a.nav__cta:hover{background:var(--brand-deep);transform:translateY(-1px)}

.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav__toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.open span:nth-child(2){opacity:0}
.nav__toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ Hero ============ */
.hero{position:relative;padding:70px 0 90px;overflow:hidden}
.hero__bg{
  position:absolute;inset:0;z-index:0;overflow:hidden;
  background:
    radial-gradient(46% 42% at 84% 10%, rgba(79,175,209,.13), transparent 72%),
    radial-gradient(44% 46% at 8% 90%, rgba(47,163,114,.11), transparent 72%),
    radial-gradient(34% 34% at 60% 55%, rgba(201,180,136,.05), transparent 72%),
    linear-gradient(180deg,#fff 0%, var(--cream) 100%);
}
.hero__bg::before,.hero__bg::after{content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.8}
.hero__bg::before{width:560px;height:560px;top:-160px;right:-120px;background:radial-gradient(circle,rgba(79,175,209,.16),transparent 65%)}
.hero__bg::after{width:480px;height:480px;bottom:-180px;left:-120px;background:radial-gradient(circle,rgba(47,163,114,.13),transparent 65%)}
.hero__deco{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero__deco>span{position:absolute}
.hero__ring{width:150px;height:150px;border-radius:50%;border:2px solid rgba(47,163,114,.22)}
.hero__ring--1{top:12%;left:32%;animation:floaty 11s ease-in-out infinite}
.hero__ring--2{width:118px;height:118px;bottom:12%;right:6%;border-color:rgba(79,175,209,.26);animation:floaty 9s ease-in-out infinite .5s}
.hero__dot{width:12px;height:12px;border-radius:50%}
.hero__dot--1{background:rgba(79,175,209,.55);top:20%;right:14%;animation:floaty 7s ease-in-out infinite .3s}
.hero__dot--2{width:8px;height:8px;background:rgba(47,163,114,.6);top:58%;left:48%;animation:floaty 8s ease-in-out infinite .7s}
.hero__dot--3{width:15px;height:15px;background:rgba(224,169,59,.5);bottom:22%;right:30%;animation:floaty 9s ease-in-out infinite .2s}
.hero__ico{position:absolute;display:flex;opacity:.75}
.hero__ico--1{top:12%;right:7%;animation:floaty 8.5s ease-in-out infinite}
.hero__ico--2{bottom:26%;right:13%;opacity:.65;animation:floaty 7.5s ease-in-out infinite .5s}
.hero__ico--3{top:46%;left:52%;opacity:.7;animation:floaty 9.5s ease-in-out infinite .3s}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero__title{font-size:clamp(2.5rem,5.4vw,4.2rem);color:var(--ink);margin-bottom:22px;line-height:1.12}
.hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__lead{font-size:1.08rem;color:var(--ink-soft);max-width:520px;margin-bottom:32px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero__tags{display:flex;gap:10px;flex-wrap:wrap;list-style:none}
.hero__tags li{font-size:.84rem;color:var(--brand-deep);background:var(--brand-soft);padding:7px 15px;border-radius:14px;font-weight:500}
.hero__tags li:nth-child(2){background:var(--sky-soft);color:var(--sky-deep)}
.hero__trust{display:flex;align-items:center;gap:22px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.hero__trust-item{display:flex;flex-direction:column;line-height:1.1}
.hero__trust-item strong{font-family:"Inter","Noto Sans SC",sans-serif;font-size:1.7rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.hero__trust-item strong small{font-size:.55em;color:var(--brand);margin-left:1px;font-weight:600}
.hero__trust-item span{font-size:.8rem;color:var(--muted);margin-top:5px}
.hero__trust-divider{width:1px;height:34px;background:var(--line)}

.hero__visual{position:relative;height:460px}
.hero__visual::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;left:14%;top:26%;background:radial-gradient(circle,rgba(79,175,209,.14),transparent 65%);filter:blur(50px);z-index:0}
.postcard{
  position:absolute;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);
  background:#fff;border:1px solid rgba(46,125,91,.07);z-index:1;
}
.postcard--main{top:0;left:0;width:66%;height:340px}
.postcard--sub{bottom:0;right:0;width:54%;height:250px}
.postcard__tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.78);backdrop-filter:blur(6px);color:var(--ink);font-size:.78rem;font-weight:500;padding:7px 14px;border-radius:14px;z-index:2}
.postcard__figure{height:100%;background:linear-gradient(135deg,#F2FAF6,#D8EEE3)}
.postcard__figure--alt{background:linear-gradient(135deg,#F0F8FC,#D6E8F2)}
.postcard__chip{
  position:absolute;left:14px;bottom:14px;z-index:2;display:flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(8px);border-radius:14px;
  padding:9px 14px;font-size:.82rem;font-weight:500;color:var(--ink);box-shadow:var(--shadow-sm);
}
.hero__float{
  position:absolute;top:18px;right:6%;z-index:3;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-radius:14px;
  padding:11px 18px;font-size:.86rem;font-weight:600;color:var(--brand);
  box-shadow:var(--shadow);border:1px solid rgba(46,125,91,.08);
}
.hero__badge{
  position:absolute;bottom:36px;left:8%;z-index:3;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border-radius:22px;
  padding:16px 22px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;
  border:1px solid rgba(46,125,91,.07);
}
.hero__badge strong{font-family:"Inter","Noto Sans SC",sans-serif;font-size:2rem;color:var(--brand);line-height:1;letter-spacing:-.02em}
.hero__badge strong small{font-size:.9rem;margin-left:2px}
.hero__badge span{font-size:.74rem;color:var(--muted);margin-top:4px}

.hero__scroll{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:2;font-size:.72rem;letter-spacing:.2em;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:8px}
.hero__scroll span{width:1px;height:34px;background:linear-gradient(var(--muted),transparent);animation:scrolldown 2s infinite}
@keyframes scrolldown{0%{opacity:0;transform:translateY(-8px)}50%{opacity:1}100%{opacity:0;transform:translateY(8px)}}

/* ============ 实力数据 ============ */
.stats{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:0}
.stats__grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.stat{padding:52px 20px;border-right:1px solid rgba(255,255,255,.08)}
.stat:last-child{border-right:0}
.stat__ic{
  width:46px;height:46px;margin:0 auto 16px;border-radius:14px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.stat__ic svg{width:23px;height:23px}
.stat:nth-child(even) .stat__ic{color:var(--sky);background:rgba(79,175,209,.10);border-color:rgba(79,175,209,.28)}
.stat__num{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:clamp(2.2rem,4vw,3.2rem);font-weight:700;color:#fff;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat__num .suffix{color:rgba(255,255,255,.7);font-size:.5em;margin-left:2px}
.stat__label{display:block;margin-top:10px;font-size:.92rem;color:rgba(255,255,255,.66)}

/* ============ 通用 section ============ */
.section{position:relative;overflow:hidden;padding:110px 0;
  background:
    radial-gradient(40% 38% at 90% 4%, rgba(79,175,209,.06), transparent 70%),
    radial-gradient(38% 42% at 4% 98%, rgba(47,163,114,.045), transparent 72%),
    linear-gradient(180deg,#fff, var(--cream));
}
.section::before{content:"";position:absolute;width:440px;height:440px;border-radius:50%;top:-130px;right:-110px;background:radial-gradient(circle,rgba(79,175,209,.10),transparent 65%);filter:blur(54px);z-index:0;pointer-events:none}
.section .container{position:relative;z-index:1}
.section--soft{background:
    radial-gradient(42% 40% at 8% 6%, rgba(79,175,209,.05), transparent 72%),
    radial-gradient(40% 42% at 94% 96%, rgba(47,163,114,.05), transparent 72%),
    linear-gradient(180deg,#fff,var(--cream))}
.section__head{max-width:680px;margin:0 auto 60px;text-align:center}
.section__title{font-size:clamp(1.9rem,3.6vw,2.7rem);color:var(--ink)}
.section__title--left{text-align:left}
.section__sub{margin-top:16px;color:var(--ink-soft);font-size:1.04rem}
.section__cta{text-align:center;margin-top:54px}

/* ============ 产品卡片 ============ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{
  background:linear-gradient(165deg,var(--mint),var(--paper) 70%);border:1px solid rgba(47,163,114,.14);border-radius:var(--radius);
  padding:34px 30px;box-shadow:var(--shadow-sm);transition:.4s var(--ease);position:relative;overflow:hidden;
}
.card:nth-child(even){background:linear-gradient(165deg,var(--ice),var(--paper) 70%);border-color:rgba(79,175,209,.18)}
.card:nth-child(odd):hover{border-color:rgba(47,163,114,.32)}
.card:nth-child(even):hover{border-color:rgba(79,175,209,.36)}
.card::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(46,125,91,.06),transparent 45%);opacity:0;transition:.4s}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:rgba(46,125,91,.3)}
.card:hover::before{opacity:1}
.card__icon{width:54px;height:54px;border-radius:16px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.card__icon svg{width:28px;height:28px}
.card:nth-child(even) .card__icon{background:var(--sky-soft);color:var(--sky-deep)}
.card h3{font-size:1.28rem;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:.96rem;margin-bottom:18px}
.card__more{color:var(--brand);font-weight:500;font-size:.9rem;transition:.3s}
.card:hover .card__more{letter-spacing:.02em}
.card__tag{position:absolute;top:18px;right:18px;z-index:2;font-size:.74rem;font-weight:600;color:var(--brand);background:rgba(255,255,255,.85);backdrop-filter:blur(6px);padding:6px 13px;border-radius:14px;box-shadow:var(--shadow-sm);border:1px solid rgba(47,163,114,.12)}
.card:nth-child(even) .card__tag{color:var(--sky-deep);border-color:rgba(79,175,209,.16)}

/* ============ 优势 feature ============ */
.feature{position:relative;overflow:hidden;padding:110px 0;
  background:
    radial-gradient(42% 42% at 6% 8%, rgba(79,175,209,.055), transparent 72%),
    radial-gradient(40% 44% at 96% 94%, rgba(47,163,114,.055), transparent 72%),
    var(--cream);
}
.feature::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;bottom:-140px;left:-120px;background:radial-gradient(circle,rgba(47,163,114,.10),transparent 65%);filter:blur(54px);z-index:0;pointer-events:none}
.feature .container{position:relative;z-index:1}
.feature__inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.feature__media{position:relative;height:460px}
.feature__photo{border-radius:var(--radius);height:100%;background:linear-gradient(150deg,#EAF4EF,#DCEFE5);position:relative;overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.feature__photo::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 70% 30%,rgba(255,255,255,.6),transparent 60%)}
.feature__ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--brand-deep);opacity:.4;z-index:1}
.feature__ph svg{width:46px;height:46px}
.feature__ph em{font-style:normal;font-size:.86rem;font-weight:500;letter-spacing:.16em}
.feature__chip{position:absolute;background:#fff;color:var(--ink);font-size:.86rem;font-weight:500;padding:11px 18px;border-radius:14px;box-shadow:var(--shadow);z-index:2}
.feature__chip--1{top:26px;right:-14px}
.feature__chip--2{bottom:34px;left:-14px;background:var(--sky);color:#fff}
.feature__rating{position:absolute;top:30px;left:-18px;z-index:3;display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border:1px solid rgba(46,125,91,.08);border-radius:14px;padding:11px 18px;font-size:.86rem;font-weight:600;color:var(--ink);box-shadow:var(--shadow)}
.feature__rating svg{width:16px;height:16px}
.feature__copy .section__title{margin-bottom:18px}
.feature__text{color:var(--ink-soft);margin-bottom:26px;font-size:1.04rem}
.checklist{list-style:none;display:flex;flex-direction:column;gap:14px}
.checklist li{display:flex;align-items:center;gap:13px;font-size:1rem;color:var(--ink)}
.check{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--brand);position:relative}
.check::after{content:"";position:absolute;left:7px;top:4px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}

/* ============ 流程 steps ============ */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step;list-style:none;padding:0;margin:0}
.step{background:linear-gradient(165deg,var(--mint),var(--paper) 75%);border:1px solid rgba(47,163,114,.14);border-radius:var(--radius);padding:30px 22px;position:relative;transition:.4s var(--ease)}
.step:nth-child(even){background:linear-gradient(165deg,var(--ice),var(--paper) 75%);border-color:rgba(79,175,209,.18)}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step__no{font-family:"Inter","Noto Sans SC",sans-serif;font-size:1.5rem;color:var(--brand);font-weight:700;opacity:.5;letter-spacing:.02em}
.step h3{font-size:1.12rem;margin:10px 0 8px}
.step p{color:var(--ink-soft);font-size:.9rem}
.step:nth-child(even) .step__no{color:var(--sky-deep)}
.step:not(:last-child)::after{content:"";position:absolute;top:46px;right:-12px;width:24px;height:1px;background:repeating-linear-gradient(90deg,var(--brand) 0 4px,transparent 4px 8px);opacity:.5}

/* ============ 案例 quotes ============ */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.quote{background:linear-gradient(165deg,var(--mint),var(--paper) 75%);border:1px solid rgba(47,163,114,.14);border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow-sm);transition:.4s var(--ease);position:relative}
.quote:nth-child(even){background:linear-gradient(165deg,var(--ice),var(--paper) 75%);border-color:rgba(79,175,209,.18)}
.quote:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.quote::before{content:"\201C";font-family:"Inter",sans-serif;position:absolute;top:10px;right:22px;font-size:3.4rem;color:var(--brand-soft);line-height:1}
.quote blockquote{font-size:1.02rem;color:var(--ink-soft);margin-bottom:24px;position:relative;z-index:1}
.quote figcaption{display:flex;align-items:center;gap:13px}
.quote__avatar{width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:500;font-family:"Inter","Noto Sans SC",sans-serif}
.quote:nth-child(even) .quote__avatar{background:var(--sky-deep)}
.quote figcaption strong{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-weight:600}
.quote figcaption small{color:var(--muted);font-size:.82rem}

/* ============ 关于 about ============ */
.about{position:relative;overflow:hidden;padding:110px 0;
  background:
    radial-gradient(42% 42% at 90% 6%, rgba(79,175,209,.06), transparent 72%),
    radial-gradient(38% 42% at 6% 96%, rgba(47,163,114,.045), transparent 72%),
    linear-gradient(180deg,#fff,var(--cream));
  color:var(--ink)}
.about::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;top:-120px;right:-120px;background:radial-gradient(circle,rgba(79,175,209,.09),transparent 65%);filter:blur(54px);z-index:0;pointer-events:none}
.about .container{position:relative;z-index:1}
.about__inner{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.about .eyebrow{color:var(--brand)}
.about .section__title{color:var(--ink);text-align:left}
.about__text{color:var(--ink-soft);margin:18px 0 30px;font-size:1.04rem}
.about__points{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.about__points div{background:linear-gradient(165deg,var(--mint),var(--paper) 75%);border:1px solid rgba(47,163,114,.14);border-radius:var(--radius-sm);padding:20px 16px;box-shadow:var(--shadow-sm)}
.about__points div:nth-child(2){background:linear-gradient(165deg,var(--ice),var(--paper) 75%);border-color:rgba(79,175,209,.18)}
.about__points strong{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:1rem;font-weight:600;margin-bottom:4px;color:var(--ink)}
.about__points span{font-size:.82rem;color:var(--muted)}
.about__visual{display:grid;grid-template-columns:1fr 1fr;gap:18px;height:380px;position:relative}
.about__badge{position:absolute;top:26px;right:18px;z-index:3;display:flex;flex-direction:column;align-items:center;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border:1px solid rgba(46,125,91,.08);border-radius:20px;padding:14px 20px;box-shadow:var(--shadow)}
.about__badge strong{font-family:"Inter","Noto Sans SC",sans-serif;font-size:1.6rem;color:var(--brand);line-height:1;letter-spacing:-.02em}
.about__badge span{font-size:.72rem;color:var(--muted);margin-top:4px}
.about__panel{border-radius:var(--radius);background:linear-gradient(150deg,#E3F2EC,#CDEEDE);border:1px solid rgba(47,163,114,.25);display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden}
.about__panel--alt{background:linear-gradient(150deg,#E6F3F9,#CFE8F4);border:1px solid rgba(79,175,209,.30)}
.about__year{font-family:"Inter","Noto Sans SC",sans-serif;font-size:3.2rem;font-weight:700;color:var(--brand-deep);letter-spacing:-.02em}
.about__panel--alt .about__year{color:var(--sky-deep)}
.about__yearlabel{color:var(--ink-soft);font-size:.9rem}

/* ============ 合作 join ============ */
.join{padding:0}
.join__inner{background:var(--grad);border-radius:var(--radius);padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;box-shadow:var(--shadow);position:relative;overflow:hidden;margin-bottom:72px}
.join__deco{position:absolute;inset:0;z-index:0;pointer-events:none}
.join__deco>span,.join__deco>svg{position:absolute}
.join__ring{width:200px;height:200px;border-radius:50%;border:2px solid rgba(255,255,255,.22);top:-70px;left:-50px;animation:floaty 9s ease-in-out infinite}
.join__dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5)}
.join__dot--1{top:24%;right:18%;animation:floaty 6s ease-in-out infinite .4s}
.join__dot--2{width:7px;height:7px;bottom:28%;right:32%;animation:floaty 7s ease-in-out infinite .8s}
.join__dot--3{width:14px;height:14px;bottom:18%;left:42%;background:rgba(255,255,255,.35);animation:floaty 8s ease-in-out infinite .2s}
.join__ico{display:flex;opacity:.6}
.join__ico--1{top:18%;right:10%;animation:floaty 7.5s ease-in-out infinite}
.join__ico--2{bottom:20%;right:14%;opacity:.5;animation:floaty 6.5s ease-in-out infinite .6s}
.join__ico--3{top:46%;left:8%;opacity:.45;animation:floaty 8.5s ease-in-out infinite .3s}
.join__copy,.join__inner>a{position:relative;z-index:1}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.join__copy h2{font-size:1.9rem;color:#fff;margin-bottom:8px}
.join__copy p{color:rgba(255,255,255,.82);max-width:560px}

/* ============ 联系 contact ============ */
.contact__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact__lead{color:var(--ink-soft);margin:16px 0 30px;font-size:1.04rem}
.contact__list{list-style:none;display:flex;flex-direction:column;gap:18px}
.contact__list li{display:flex;align-items:center;gap:14px;font-size:.98rem}
.contact__ic{flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center}
.contact__ic svg{width:20px;height:20px}
.contact__list strong{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-weight:600;margin-bottom:1px}
.contact__list span:not([class]){color:var(--ink-soft)}

.contact__form{background:linear-gradient(165deg,var(--ice),var(--paper) 75%);border:1px solid rgba(79,175,209,.18);border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.85rem;font-weight:500;color:var(--ink-soft)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:.96rem;padding:13px 15px;border:1.5px solid var(--line);
  border-radius:12px;background:#fff;color:var(--ink);transition:.3s;resize:none;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.form__hint{grid-column:1/-1;color:var(--brand);font-weight:500;text-align:center;margin-top:4px}

/* ============ 页脚 ============ */
.footer{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:64px 0 0}
.footer::after{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);z-index:2}
.footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(38% 55% at 92% 2%, rgba(47,163,114,.16), transparent 70%),
    radial-gradient(30% 45% at 4% 92%, rgba(79,175,209,.12), transparent 70%);
}
.footer__deco{position:absolute;inset:0;z-index:0;pointer-events:none}
.footer__deco>span{position:absolute}
.footer__ring{width:180px;height:180px;border-radius:50%;border:2px solid rgba(47,163,114,.35);top:-64px;right:8%;animation:floaty 10s ease-in-out infinite}
.footer__dot{width:10px;height:10px;border-radius:50%}
.footer__dot--1{background:rgba(79,175,209,.5);top:30%;right:24%;animation:floaty 7s ease-in-out infinite .3s}
.footer__dot--2{width:7px;height:7px;background:rgba(47,163,114,.55);bottom:34%;right:40%;animation:floaty 8s ease-in-out infinite .7s}
.footer__dot--3{width:13px;height:13px;background:rgba(255,255,255,.18);bottom:22%;left:46%;animation:floaty 9s ease-in-out infinite .2s}
.footer__ico{position:absolute;display:flex;opacity:.7}
.footer__ico--1{top:22%;right:14%;animation:floaty 8.5s ease-in-out infinite}
.footer__ico--2{bottom:26%;right:20%;opacity:.6;animation:floaty 7.5s ease-in-out infinite .5s}
.footer__inner,.footer__bar{position:relative;z-index:1}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer__brand p{color:rgba(255,255,255,.6);font-size:.9rem;margin-top:16px;line-height:1.8}
.footer__col h4{font-size:1rem;margin-bottom:18px;color:#fff}
.footer__col a{display:block;color:rgba(255,255,255,.62);font-size:.92rem;padding:6px 0;transition:.3s}
.footer__col a:hover{color:var(--sky);padding-left:6px}
.footer__contact{display:block;margin-top:10px;color:var(--sky);font-size:.88rem}
.footer__bar{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer__barinner{display:flex;justify-content:space-between;align-items:center;gap:16px;color:rgba(255,255,255,.5);font-size:.82rem}
.footer__beian{color:rgba(255,255,255,.62);font-size:.82rem;transition:.3s}
.footer__beian:hover{color:var(--sky);text-decoration:underline}

/* ============ 滚动揭示动画 ============ */
.reveal{opacity:0;transform:translateY(28px);transition:.8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media(max-width:1024px){
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .hero__visual{height:380px;max-width:520px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
  .quotes{grid-template-columns:1fr}
  .feature__inner,.about__inner,.contact__inner{grid-template-columns:1fr;gap:40px}
  .about__visual{max-width:460px}
}
@media(max-width:680px){
  .container{padding:0 20px}
  .topbar__text{font-size:.74rem}
  .nav__menu{
    position:fixed;top:74px;right:0;height:calc(100vh-74px);width:78%;max-width:320px;
    flex-direction:column;align-items:flex-start;gap:6px;padding:28px 26px;
    background:var(--cream);box-shadow:var(--shadow-lg);transform:translateX(110%);transition:.4s var(--ease);
  }
  .nav__menu.open{transform:none}
  .nav__menu a{padding:12px 0;width:100%;border-bottom:1px solid var(--line);font-size:1.05rem}
  .nav__menu a.nav__cta{margin-top:10px;text-align:center;justify-content:center;width:100%!important;border-bottom:0}
  .nav__toggle{display:flex}
  .stats__grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid rgba(255,255,255,.08)}
  .stat:nth-child(2n){border-right:0}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .section,.feature,.about{padding:72px 0}
  .join__inner{flex-direction:column;align-items:flex-start;padding:40px 30px;margin-bottom:48px}
  .contact__form{grid-template-columns:1fr}
  .hero__visual{height:320px}
  .footer__inner{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1/-1}
}